9986990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4519}}^1$

素因数の和:4556

約数の個数: 32

約数和(自身を含む): 20502720

約数和(自身を除く): 10515730

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 4519, 9038, 22595, 45190, 58747, 76823, 117494, 153646, 293735, 384115, 587470, 768230, 998699, 1997398, 4993495, 9986990]

約数ペア:

[(1, 9986990), (2, 4993495), (5, 1997398), (10, 998699), (13, 768230), (17, 587470), (26, 384115), (34, 293735), (65, 153646), (85, 117494), (130, 76823), (170, 58747), (221, 45190), (442, 22595), (1105, 9038), (2210, 4519)]